BBC Four Today

Tim Dunn visits the architecture of the Stockton and Darlington railway, the first passenger steam line in the world and learns how Essex's enormous Chappel Viaduct was built

Chris Beardshaw heads for Cornwall in a helicopter to create a tropical paradise. He takes a dip in the ocean along the way in search of plants in from South America

Richard Miles concludes his series charting the history of archaeological breakthroughs by discovering more about the ancient common man

Magnus Magnusson hosts the fifth heat, with specialist subjects including Benjamin Britten's operas, the history of the Royal Navy 1794-1805, and the Berry novels of Dornford Yates

Robert Robinson presides over another duel of words and wits as Jenny Agutter, Sinead Cusack, Tim Rice and Nigel Dempster join team captains Frank Muir and Patrick Campbell

Janina Ramirez tells the story of the first book written in English by a woman, which was suppressed for centuries for its controversial theological views

Alastair Sooke examines periods of sculpture to discover stories of great British sculptors and the breakthroughs behind their work, beginning with medieval times

James Fox explores how humans first attempted to understand nature, revealed by the art of the Song dynasty in China and the ancient Islamic world, to the Scientific Revolution

Chris Beardshaw heads for Cornwall in a helicopter to create a tropical paradise. He takes a dip in the ocean along the way in search of plants in from South America

Richard Miles concludes his series charting the history of archaeological breakthroughs by discovering more about the ancient common man

Janina Ramirez tells the story of the first book written in English by a woman, which was suppressed for centuries for its controversial theological views